Today started off with Mr. Lieberman discussing the War of 1812, mainly Francis Scott Key. After that we went over the quiz and learned that neither JK Rowling nor Stephanie Meyer is the best selling author in the history of the world, and it is in fact Agatha Christie. I had my money on Mao Zedong. After the quiz Liebs introduced our next lab:
DENSITY OF PENNIES. (The data for this lab can also be found here). The lab seems to be comparing the mass and volume of pre 1982 pennies with post 1982 pennies.
In case your interested, I found this cool chart on the changes of the penny. (Sorry Mr. Lieberman if this is supposed to be a secret)
| Years | Material |
|---|
| 1793–1857 | 100% copper |
| 1857–1864 | 88% copper, 12% nickel (also known as NS-12) |
| 1864–1942 1946–1962 | bronze (95% copper, 5% tin and zinc) |
| 1943 | zinc-coated steel (also known as steel penny) |
| 1944–1946 | brass (95% copper, 5% zinc) |
| 1974 | Experimental aluminum variety |
| 1962–1982 | brass (95% copper, 5% zinc) |
| 1982–present* | 97.5% zinc core, 2.5% copper plating
|
Sorry for the lateness I had a busy day/night
The next scribe post is AnnMarie C.
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